Automation Components RH Test and Calibration User Manual
Rh test and calibration instructions
RH Test and Calibration Dip Switch Settings (See Figure 1 & 2)
Note: Do not adjust these switches unless you are using them to troubleshoot or recalibrate the sensor.
Dipswitch #3 should always be left in the ON position during normal operating conditions. Failure to do so
will not allow the RH transmitter to read the sensor (The output will always remain the same).
0% RH Output - Transmitter always outputs a signal of 4 mA or 0 VDC. Sensor doesn’t affect the transmitter
output. (For Trouble Shooting Purposes Only)
50% RH Output - Transmitter always outputs a signal of 12 mA, 2.5 VDC, or 5 VDC. Sensor doesn’t affect
the transmitter output. (For Trouble Shooting Purposes Only)
100% RH Output - Transmitter always outputs a signal of 20 mA, 5 VDC, or 10 VDC. Sensor doesn’t affect
the transmitter output. (For Trouble Shooting Purposes Only)
Normal Operating Condition - The DIP switch must be set in this position for the RH signal to change, due
to the actual measurement of the Relative Humidity by the humidity sensor.
Increment RH Output - This DIP switch will allow you to calibrate the sensor through the software.
The switch must be toggled from the Off to the On position and then returned to the Off position for an
increase of 0.5% RH. This means that if your humidity has drifted 1% over a certain time period, you
will be able to toggle the Increment RH Output switch (2) times in order to slide the whole curve
upward 1%. Note: This is only a single point calibration, and is not recommended for critical applications.
Please contact the factory before doing any field calibration.
Decrement RH Output - This DIP switch will allow you to calibrate the sensor through the software.
The switch must be toggled from the Off to the On position and then returned to the Off position for a
decrease of 0.5% RH. This means that if your humidity has drifted 1% over a certain time period, you
will be able to toggle the Decrement RH Output switch 2 times in order to slide the whole curve
downward. Note: This is only a single point calibration, and is not recommended for critical applications.
Please contact the factory before doing any field calibration.
Reset to Original Calibration - Both the Increment and the Decrement DIP switches should be turned on
for a minimum of 5 seconds before turning them both off again. This will allow you to reset the transmitter
back to the original factory calibration.
Test and Calibration Switch Settings (SW2)
Figure # 1
50% RH Output
6
5
4
ON
3
2
1
Increment RH Output
4
5
6
3
2
ON
1
Normal Operating Condition
4
5
6
3
2
1
ON
0% RH Output
6
5
4
ON
3
2
1
Reset to Original Calibration
6
5
4
1
ON
2
3
Decrement RH Output
4
5
6
ON
1
2
3
100% RH Output
6
5
ON
1
2
3
4
ACI
ACI
“First in Sensor Quality”
Automation Components Inc.
2305 Pleasant View Rd.
Middleton, WI 53562
www.workaci.com
1-608-831-2585
For more information, recalibration
Instructions or to download
any of these instructions go to
www.workaci.com/instructions.htm
RH Test and Calibration Instructions